diff --git a/CHANGELOG.md b/CHANGELOG.md
index 66b78cc..bc36fd5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## v0.5.6 (2026-05-19)
+
+### Fix
+
+- 优化认证登录重试机制，新增 token 过期模拟调试接口，解决设备无故掉线问题 (#875)
+
 ## v0.5.5 (2026-05-18)
 
 ### Feat
diff --git a/pyproject.toml b/pyproject.toml
index 0b9292f..c31bfa5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "xiaomusic"
-version = "0.5.5"
+version = "0.5.6"
 description = "Play Music with xiaomi AI speaker"
 authors = [
 {name = "涵曦", email = "im.hanxi@gmail.com"},
diff --git a/xiaomusic/__init__.py b/xiaomusic/__init__.py
index 86716a7..a779a44 100644
--- a/xiaomusic/__init__.py
+++ b/xiaomusic/__init__.py
@@ -1 +1 @@
-__version__ = "0.5.5"
+__version__ = "0.5.6"